package go/ast
A CommentMap maps an AST node to a list of comment groups associated with it. See NewCommentMap for a description of the association.
Golang go/ast.CommentMap type and NewCommentMap() function usage example
Example( taken from http://golang.org/pkg/go/ast/#CommentMap )
// Create the AST by parsing src.
fset := token.NewFileSet() // positions are relative to fset
f, err := parser.ParseFile(fset, "src.go", src, parser.ParseComments)
if err != nil {
panic(err)
}
// Create an ast.CommentMap from the ast.File's comments.
// This helps keeping the association between comments
// and AST nodes.
cmap := ast.NewCommentMap(fset, f, f.Comments)
References :
http://golang.org/pkg/go/ast/#CommentMap
http://golang.org/pkg/go/ast/#NewCommentMap
